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From: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
To: Andrey Smirnov <andrew.smirnov@gmail.com>,
	Guenter Roeck <linux@roeck-us.net>,
	Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH v3 10/11] power: supply: core: add output voltage measurements
Date: Fri, 03 Apr 2020 22:20:36 +0200	[thread overview]
Message-ID: <8d46214c860172b0cd8baad05fd0d3f09080e041.1585944770.git.mirq-linux@rere.qmqm.pl> (raw)
In-Reply-To: <cover.1585944770.git.mirq-linux@rere.qmqm.pl>

Add support for supply output voltage to be measured and configured.
This might be different from the voltage on the storage element (battery).

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
---
 drivers/power/supply/power_supply_hwmon.c | 25 +++++++++++++++++++++++
 drivers/power/supply/power_supply_sysfs.c |  3 +++
 include/linux/power_supply.h              |  3 +++
 3 files changed, 31 insertions(+)

diff --git a/drivers/power/supply/power_supply_hwmon.c b/drivers/power/supply/power_supply_hwmon.c
index 0fd2e7ccb767..9125854adcb0 100644
--- a/drivers/power/supply/power_supply_hwmon.c
+++ b/drivers/power/supply/power_supply_hwmon.c
@@ -16,6 +16,7 @@ struct power_supply_hwmon {
 static const char *const ps_input_label[] = {
 	"battery",
 	"external source",
+	"load",
 };
 
 static const char *const ps_temp_label[] = {
@@ -51,6 +52,20 @@ static int power_supply_hwmon_in1_to_property(u32 attr)
 	}
 }
 
+static int power_supply_hwmon_in2_to_property(u32 attr)
+{
+	switch (attr) {
+	case hwmon_in_min:
+		return POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MIN;
+	case hwmon_in_max:
+		return POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MAX;
+	case hwmon_in_input:
+		return POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_NOW;
+	default:
+		return -EINVAL;
+	}
+}
+
 static int power_supply_hwmon_in_to_property(u32 attr, int channel)
 {
 	switch (channel) {
@@ -58,6 +73,8 @@ static int power_supply_hwmon_in_to_property(u32 attr, int channel)
 		return power_supply_hwmon_in0_to_property(attr);
 	case 1:
 		return power_supply_hwmon_in1_to_property(attr);
+	case 2:
+		return power_supply_hwmon_in2_to_property(attr);
 	default:
 		return -EINVAL;
 	}
@@ -393,6 +410,11 @@ static const struct hwmon_channel_info *power_supply_hwmon_info[] = {
 
 			   HWMON_I_LABEL   |
 			   HWMON_I_MAX     |
+			   HWMON_I_INPUT,
+
+			   HWMON_I_LABEL   |
+			   HWMON_I_MIN     |
+			   HWMON_I_MAX     |
 			   HWMON_I_INPUT),
 
 	NULL
@@ -463,6 +485,9 @@ int power_supply_add_hwmon_sysfs(struct power_supply *psy)
 		case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
 		case POWER_SUPPLY_PROP_INPUT_VOLTAGE_NOW:
 		case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+		case POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MIN:
+		case POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MAX:
+		case POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_NOW:
 			set_bit(prop, psyhw->props);
 			break;
 		default:
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index 1d1fb69516a8..fb6f113b52bb 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -278,6 +278,9 @@ static struct device_attribute power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(input_voltage_now),
 	POWER_SUPPLY_ATTR(input_voltage_limit),
 	POWER_SUPPLY_ATTR(input_power_limit),
+	POWER_SUPPLY_ATTR(output_voltage_now),
+	POWER_SUPPLY_ATTR(output_voltage_min),
+	POWER_SUPPLY_ATTR(output_voltage_max),
 	POWER_SUPPLY_ATTR(energy_full_design),
 	POWER_SUPPLY_ATTR(energy_empty_design),
 	POWER_SUPPLY_ATTR(energy_full),
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 5313d1284aad..f1ff8d230488 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -132,6 +132,9 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_INPUT_VOLTAGE_NOW,
 	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
 	POWER_SUPPLY_PROP_INPUT_POWER_LIMIT,
+	POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MIN,
+	POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MAX,
 	POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
 	POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
 	POWER_SUPPLY_PROP_ENERGY_FULL,
-- 
2.20.1


  parent reply	other threads:[~2020-04-03 20:20 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-03 20:20 [PATCH v3 00/11] extensions and fixes Michał Mirosław
2020-04-03 20:20 ` [PATCH v3 01/11] power: charger-manager: remove duplicate assignment Michał Mirosław
2020-04-03 20:20 ` [PATCH v3 03/11] power: generic-adc-battery: fold psy_props[] to private data Michał Mirosław
2020-04-03 20:20 ` [PATCH v3 02/11] power: charger-manager: don't write through desc->properties Michał Mirosław
2020-05-01 12:38   ` Sebastian Reichel
2020-05-01 13:30     ` Michał Mirosław
2020-05-01 13:39       ` [PATCH] power: charger-manager: fix adding of optional properties Michał Mirosław
2020-05-01 13:51         ` Sebastian Reichel
2020-05-01 14:15           ` Michał Mirosław
2020-05-01 14:30           ` [PATCH] power: charger-manager: clarify num_properties starting value Michał Mirosław
2020-05-01 14:58             ` Sebastian Reichel
2020-05-01 13:48       ` [PATCH v3 02/11] power: charger-manager: don't write through desc->properties Sebastian Reichel
2020-04-03 20:20 ` [PATCH v3 05/11] power: supply: core: allow to constify property lists Michał Mirosław
2020-05-01 12:36   ` Sebastian Reichel
2020-04-03 20:20 ` [PATCH v3 04/11] power: supply: core: reduce power_supply_show_usb_type() parameters Michał Mirosław
2020-05-01 12:36   ` Sebastian Reichel
2020-04-03 20:20 ` [PATCH v3 06/11] power: supply: core: fix HWMON temperature labels Michał Mirosław
2020-05-01 12:39   ` Sebastian Reichel
2020-04-03 20:20 ` [PATCH v3 07/11] power: supply: core: tabularize " Michał Mirosław
2020-04-05  1:52   ` kbuild test robot
2020-04-07 18:13     ` Nick Desaulniers
2020-04-07 19:55       ` Michał Mirosław
2020-04-07 19:57         ` Nick Desaulniers
2020-04-07 22:31           ` Nick Desaulniers
2020-04-20  9:22       ` Michał Mirosław
2020-05-01 12:47         ` Sebastian Reichel
2020-04-03 20:20 ` [PATCH v3 08/11] power: supply: core: hide unused HWMON labels Michał Mirosław
2020-05-01 13:22   ` Sebastian Reichel
2020-04-03 20:20 ` [PATCH v3 09/11] power: supply: core: add input voltage/current measurements Michał Mirosław
2020-04-03 20:20 ` Michał Mirosław [this message]
2020-04-03 20:20 ` [PATCH v3 11/11] power: supply: core: document measurement points Michał Mirosław

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